Henry David Thoreau (2014). “Citizen Thoreau: Walden, Civil Disobedience, Life Without Principle, Slavery in Massachusetts, A Plea for Captain John Brown”, p.31, Graphic Arts Books
Speech on his trial and conviction for high treason (September, 1803); reported in "Hoyt's New Cyclopedia Of Practical Quotations" by Jehiel Keeler Hoyt, (p. 230), 1922.